AS1530/AS1531
Data Sheet
- E l e c t r i c a l
Characteristics
Table 4. AS1531 Electrical Characteristics (Continued)
Symbol
T
CVREF
Parameter
REF Output
Temperature Coefficient
Load Regulation
C
BYPREF
7
Conditions
Min
Typ
±25
Max
0 to 0.75mA output load
4.7
0.01
0.6
2.0
10
10
Capacitive Bypass at REF
Capacitive Bypass
C
BYPREF
ADJ
at REFADJ
REFADJ Output Voltage
REFADJ Input Range
For small adjustments, from 1.22V
REFADJ Buffer
To power down the internal reference
Disable Threshold
Buffer Voltage Gain
External Reference:
Reference buffer disabled, reference applied to REF
REF Input Voltage Range
REF Input Current
Digital Inputs:
DIN, SCLK, CSN
V
INH
V
INL
Input High Voltage
Input Low Voltage
8
Units
ppm/
°C
mV/
mA
µF
µF
V
mV
1.22
±100
1.4
2.045
1.0
V
DD1
+
50mV
350
320
5
V
DD1
-1
V
V/V
V
µA
V
REF
= 2.50V, f
SCLK
= 4.8MHz
V
REF
= 2.50V, f
SCLK
= 0
In power-down, f
SCLK
= 0
0.7 x
V
DD
200
V
0.3 x
V
DD
0.8
V
V
µA
pF
V
V
+10
5
µA
pF
V
HYST
Input Hysteresis
Input Leakage
I
IN
Input Capacitance
C
IN
Digital Outputs:
DOUT, SSTRB
Output Voltage Low
V
OL
V
OH
I
L
Output Voltage High
V
IN
= 0 or V
DD2
-1
5
+1
I
SINK
= 5mA
I
SOURCE
= 0.5mA
CSN = V
DD2
CSN = V
DD2
V
DD2
-
0.5V
-10
0.45
Tri-State Leakage Current
Tri-State Output
C
OUT
Capacitance
Power Supply
V
DD1
,
9
V
DD2
,
Positive Supply Voltage
V
DD3
2.7
Normal Operation
with External
10
Reference
Normal Operation
with Internal
10
Reference
Reduced-Power
11
Mode
Full Power-Down
11
Mode
V
DD1
= V
DD2
= V
DD3
= 2.7 to 3.6V,
Mid-Scale Input
3.6
V
2.2
2.7
I
VDD1
,
I
VDD2
,
I
VDD3
Supply Current
V
DD1
= V
DD2
=
V
DD3
= 5.5V
2.7
0.4
0.5
-2
±0.1
3.2
mA
0.8
2
+2
µA
mV
PSR
Power-Supply Rejection
1. Tested at V
DD1
= V
DD2
= V
DD3
= +3V; COM = GND; bit
= 1, single-ended input mode.
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